Electric heater



A. A. BUCK.

ELECIRIC HEATER.

APPLICATION FILED AUG-6. 1917.

1,429,402, PatehtedSept. 19,1922.

Patented Sept. 19, 1922.

ABTON ALBERT BUCK, OF ZURICH, SWITZERLAND.

ELECTRIC HEATER.

Application filed August 6, 1917. Serial No. 184,784.

To all whom it may concern:

Be it known that I, ABTON ALBERT BUCK, a citizen of the Swiss Confederation, residing at Zurich, Canton Zurich, Switzerland, have invented new and useful Improvements in Electric Heaters, of which the following is a specification.

This invention relates to electric heaters or electro thermal devices providing heated cushions, heated carpets and so forth, and its chief object is to provide a disposition or arrangement by which a bare resistance wire is secured without extraneous means to a finished fabric serving as carrier for same; a secondary object being to enter or interlace the resistance wire in the finished fabric in a manner as to cause any two adjacent wire portions to be on opposite sites of said fabric whilst producing any design or configuration of wire on the fabric.

The annexed drawings show in plan views two examples of arrangement according to.

my invention.

In Fig. l the resistance wire I) is laced into the previously finished fabric a along straight parallel lines and in such a manner that alternate wire portions or lengths c areexposed on the right side of the fabric and that intervening wire portions or lengths d appear on the wrong sideof said fabric, as

is indicated by plain and by dotted portions of lines on the drawings. At a suitable distanee alongside the first wire is disposed a wire 2 and this is so interlaced in the fabric as to have corresponding portions, to those denoted by c of the wire 1, at the wrong side of the fabric while intervening wire portions, corresponding to (Z, appear on the right' side of the fabric. A similar method of interlacing is followed with any desired 40 number of wires such as those marked 3 and 4 in Fig. 1. The ends of the adjacent wires 1 and 2 are twisted together as at e on the edges of the fabric. Similarly, the wires 3 and 4 have their ends twisted together, while,

moreover, the wire 3 is twisted .to the at the opposite edge of the fabric.

In Fig. 2 the same method of interlacing with thefabric alternate-and adjacent portions of resistance Wires, but the latter here form a zig-zag design.

I claim:

An electric heater formed of textile fabric and incorporated resistance wires threaded stepwise from front to back and back to front therein with each surface thread-portion arranged over an interval along connected rows of wires-as stated.

ABTON ALBERT BUCK- wire 2 

